Overflow-reservoir for cisterns.



No. 644,856. Patented Mar. 6,1900. .1. GAA.

OV EBFLOW RESERVOIR FOR CISTEBNS.

(Application filed Oct. 5, 1899.|

(No Model.)

wlrn/gsgs 4% m VENTOH THE NORRIS FEYERS do. vnotouma, wxsmnswn. n. c.

JOHN GAA, or COLUMBUS, orno.

OVERFLOW-RESERVOIR FOR CISTERNS.

SPECIFICATION forming part of Letters Patent No. 644,856, dated March 6,1900.

Application filed October 5, 1899 Serial No. 782,615 (No model.)

To all, w/m'nt it may concern;

Be it known that I, JOHN GAA, a citizen of the United States, residingat Columbus, in the county of Franklin and State of Ohio, have inventeda certain new and useful Improvement in Overflow-Reservoirs forOisterns, of which the following is a specification.

My invention relates to the improvement of overflow devices forcisterns; and the objects of my invention are to provide, in conjunctionwith a rain-water cistern, an overflow reservoir or compartment ofsuperior construction and arrangement of parts, to provide im provedmeans in connection therewith whereby the water from house-pipes will beautomatically directed into a sewer-outlet when the water in the cisternrises to a predetermined height, to provide improved means forpreventing the backing of sewenwater into the rain-water from thesewer-outlet, and to produce other improvements in details ofconstruction, which will be more fully pointed out hereinafter. Theseobjects I accomplish in the manner illustrated in the accompanyingdrawing, in which the figure represents a central vertical section of myimprovement, showing in conjunction therewith a portion of a cistern.

Similar numerals refer to similar parts.

1 represents an ordinary rain-water cistern. Built in the earth adjacentto the cistern 1 is an overflow tank or reservoir 2, theupper endopening of the latter being adapted to be closed by a cisterncover-plate 3, of the usual or any desirable form. As indicated in thedrawing, the bottom or lower portion of the reservoir 2 converges tomeet the mouth or upper end portion of a downwardly-extending tubularcasing 3, within which I provide a valve-casing, consisting of upper andlower valve-casin g sections 4 and 5. The upper casing-section 4consists, as shown, of a flaring mouth portion, the upperoutwardly-fianged end of which bears in the bell or internal shoulder ofthe upper end of the casing 3. The lower or inner portion of the uppersection 4 is provided with a substantially bowlshaped termination 4,which'is formed with laterally-p rojecting lugs 6. The lower valvecasingsection 5, although inverted with reference to the position of the uppersection 4, is of corresponding form, and the laterallyprojecting lugs 6thereof are engaged. with the corresponding lugs 6 of the upper sectionthrough the medium of bolts or otherwise.

The rounded openings at the junctions of the flaring outer andbowl-shaped inner portions of the valve-casing sections result in theformation of upper and lower valve-seats, which are adapted to be closedin the manner hereinafter described. The lower reduced end of the outercasing 3 is secured, as shown, in the hell or enlarged mouth of theupper end of a sewer-trap section 7, the latter being connected throughthe medium of a sewer-pipe 8 with a convenient sewer.

9 represents a vertically-arranged valverod which extends downwardthrough a central opening in the reservoir cover-plate 3 and thencethrough suitable guides or bearings 10, which are arranged oncross-pieces 1-1. The valve-rod 9 has formed with its lower end asuitably-shaped valve 12, which is designed, as indicated in thedrawing, to enter and. close the valve-seat of the casing-section 4. Ata desirable height on the rod 9 I secure a floatbody 13, the latterpreferably being made adj ustable on said rod 9 through the medium ofset-screws 14:. In the upper portion of the rod 9, adjacent to thecover-plate 3, I provide an angular depressible spring 15, which ispreferably of the character ordinarily employed in umbrella-rods for thepurpose of retaining the latter in hoisted positions. On the upper endof the rod 9 and on the outer side of the cover-plate 3 said rod isprovided with a suitable head or handpiece 9.

16 represents a rain-water-inlet pipe which may lead from the rain-waterhouse-pipes or other suitable sources, said inlet-pipe prefer ablyleading into the upper portion of the reservoir 2, as shown, at a pointabove the discharge-pipe 17, which leads from said reservoir to thecistern 1. Within the lower section 5 of the valve-casing and upon adisk of wire-netting or similar material 18 I support a ball-valve 19.

It is obvious that when the valve 12 is in its lower or closed positioncommunication with the sewer-outlet will be entirely out olf and thewater which enters the reservoir 2 through the medium of the inlet=pipe16 will rise to the mouth of the pipe 17 and fall through thelatter intothe cistern. However,

tern.

when the Water reaches a sufficient height Within the reservoir to liftthe float 13 and its valve-rod 9 until the springcatch 15 has passedthrough the central opening in the top plate 3 the'valve 12 will havebeen raised to permit the water which is discharged into the reservoirto escape through the sewer-outlet 7. It will also be observed thatduring the passage of the rod 9 through the central opening of the topplate 3 the spring 15 will be compressed, but that on clearing saidopening said spring will assume its normal position, and thereby engagethe top of the coverplate 3 and serve to retain the valve 12 in its openposition until the rod 9 is depressed by hand. In case the valve 12 isopen and there is through a stoppage of the sewer or otherwise atendency of the sewer-water to back or rise into the reservoir andmingle with the rain-water therein it will be observed that theball-valve 19 will be lifted into its seat in the upper portion of thevalve-casing section 5 and the sewer-Water thus prevented from enteringsaid reservoir.

From the construction shown and described it will be seen that simpleand reliable means are provided for automatically cutting off the flowof water from a cistern and that means are also provided in combinationtherewith for preventing the mingling of the sewer-water with thecontents of the reservoir or cis- It will also readily be seen that suchsediment or other foreign matter which may be of sufficient specificgravity to sink inwater will be deposited in the lower portion of thereservoir and prevented from entering the cistern. It will be observedthat by the employment of myimproved overflow device the cistern-waterWill be entirely freed from contamination by becoming mingled with thesewage or sewer-gas and that such cisternwater may be readily adaptedfor drinking purposes.

Ihe construction herein shown is simple and effective and may beproduced at a low cost of manufacture.

Having now fully described my invention, what I claim, and desire tosecure by Letters Patent, is-

In an overflow-reservoir for cisterns, the combination with a cistern,of a reservoir arranged adjacent thereto, a valve-casing in the lowerportion thereof and a sewer-pipe communicating therewith, of avertically-movable valve-rod 9 having a valve adapted to closecommunication with said sewer-pipe, a float projection on saidvalve-rod, a rain-water-supply pipe 16 leading to said reservoir and apipe 17 leading therefrom to said cistern, substantially as specified.

JOHN GAA.

In presence of- O. O. SHEPHERD, A. L. PHELPS.

